Several RF and microwave radiating devices, such as horn antennas, Fabry–Perot cavity
antennas, and aperture-fed focusing devices, are excited through rectangular waveguides …

We present a unified and extended perspective of Bessel beams, irrespective of their orbital
angular momentum (OAM)—zero, integer or noninteger—and mode—scalar or vectorial …

Bessel beams (BBs) can be generated at microwave frequencies by means of compact,
planar devices based on Fabry–Perot cavity leaky-wave resonators. Most designs are based …

A tutorial overview is presented on the principles of operation, physical modeling, and
design procedures for the class of planar radiators known as Fabry-Perot cavity antennas …

In this paper, a systematic design of Fabry-Perot cavity antennas based on leaky waves is
proposed in the THz range. The use of different topologies for the synthesis of homogenized …

A radially periodic 2-D leaky-wave (LW) antenna is studied for the generation of zeroth-order
Bessel beams within a limited spatial region and over a wide-frequency range. The antenna …

Resonant Bessel-beam launchers are low-cost, planar, miniaturized devices capable of
focusing electromagnetic radiation in a very efficient way in various frequency ranges, with …

In this communication, we present a theoretical analysis, design, and fabrication of a limited-
diffractive planar Bessel beam launcher, that exhibits a zeroth-order Bessel profile in the …

This chapter illustrates the capabilities of non-diffractive Bessel beams for near-field
focusing. After a brief introduction of the non-diffractive phenomenon and its origin, the …

This article proposes a novel nondiffractive Bessel beam launcher based on discrete
dielectric lens (DDL) antenna with 2-D beam-scanning capability operating at 300 GHz. The …